EP0389643A1 - Direct-acting impact ripper - Google Patents
Direct-acting impact ripper Download PDFInfo
- Publication number
- EP0389643A1 EP0389643A1 EP89910932A EP89910932A EP0389643A1 EP 0389643 A1 EP0389643 A1 EP 0389643A1 EP 89910932 A EP89910932 A EP 89910932A EP 89910932 A EP89910932 A EP 89910932A EP 0389643 A1 EP0389643 A1 EP 0389643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shank
- bracket
- breaker
- hydraulic breaker
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/32—Rippers
- E02F5/323—Percussion-type rippers
Definitions
- the present invention relates to a parallel linkage type shock ripper device, and more particularly, to a direct driven shock ripper device which enables blows of a hydraulic breaker to be efficiently transferred to a base rock.
- a parallel link type shock ripper device 1 is mounted on a rear 2 of the vehicle, as shown in Fig. 6.
- a shank 8 is forced into the base rock by the depressing force generated by the weight of the bulldozer.
- the base rock is broken up by utilizing the towing force of the bulldozer and the hydraulic force of a tilt cylinder 5.
- the ability with which the bulldozer breaks up the base rock is substantially proportional to the weight of the vehicle.
- an object of the present invention is to provide a direct driven shock ripper device which is capable of efficiently transferring blows of a hydraulic breaker to a base rock.
- the present invention provides a direct driven type shock ripper device which includes a bracket fixed to a rear of a vehicle which is a construction machine, a beam on which a shank and a hydraulic breaker which givens impacts to the shank are mounted, the beam being disposed at the back of the bracket, an arm which interconnects a lower portion of the bracket to a lower portion of the beam, a tilt cylinder which interconnects an upper portion of the bracket to an upper portion of the beam, the bracket, the beam, the arm and the tilt cylinder in combination form a parallel linkage, and a lift cylinder provided between the upper portion of the bracket and the lower portion of the beam.
- the shank is mounted on the beam through a pair of link members to form a quadric linkage.
- Fig. 1 is a side elevational view of an embodiment of a direct driven shock ripper device according to the present invention.
- This direct driven shock ripper device includes a bracket 3 fixed to a rear 2 of a vehicle, and a beam 4 disposed at the rear of the bracket 3, an arm 6 which couples the lower portion of the bracket 3 and the lower portion of the beam 4, a tilt cylinder 5 which interconnects the upper portion of the bracket 3 to the upper portion of the beam 4, and a lift cylinder 6 extending between the upper portion of the bracket 3 and the lower portion of the beam 4.
- a shank 8 is mounted on the beam 4, and a hydraulic breaker 10 is incorporated in the beam 4.
- the shank 8 is pivotally supported on the beam 4 through a pair of link members 7.
- a ripper point 17 is mounted on the forward end of the shank 8.
- the hydraulic breaker 10 is held above a blowing surface provided on the rear end of the shank 8 by a breaker mount bracket 9 mounted on the beam 4.
- Fig. 2 is a cross-sectional view showing a state in which the shank 8 is pivotally supported on the beam 4 by means of the pair of link members 7.
- Each of the links 7 is pivotally supported on the beam 4 at one end thereof P or Q.
- the other ends S and T of the links 7 are supported on the shank 8.
- the 4 points, P, Q, S and T form a quadric linkage which moves the shank 8 in a straight line when the hydraulic breaker 10 strikes the shank 8.
- Link member stoppers 4a and 4b are mounted on the beam 4 to limit the linear motion of the shank 8 which occurs when loads are applied to the shank 8.
- Fig. 3 is a section taken along the line A - A of Fig. 1.
- the one end P of the link 7 is pivotally supported on the beam 4 through an elastic bushing 11, and the other end S is pivotally supported on the shank 8
- Fig. 4 is a section taken along the line B - B of Fig. 1.
- the one end Q of the link 7 is pivotally supported on the beam 4 through the elastic bushing 11, and the other end T is pivotally supported on the shank 8.
- the breaker mount bracket 9 is pivotally supported on the beam 4 through an elastic bushing 12.
- Figs. 5 (a) and (b) are respectively sections taken along the lines C - C and D - D of Fig. 1.
- An upper side stopper 13 and a lower side stopper 14 are mounted on the inner side of the beam 4 in such a manner that they grip the shank 8 to receive the lateral deflection generated in the shank 8 when the vehicle is swivelled.
- An elastic bushing 15 is mounted on the inner side of the breaker mount bracket 9 to prevent lateral deflection generated in the hydraulic breaker 10 when it strikes the shank 8.
- the lift cylinder 16 is stretched, as shown in Fig. 1. Thereafter, the shank 8 is forced into the ground by the depressing force caused by the weight of the vehicle, and the base rock is broken up by utilizing the pulling force of the vehicle and the pulling up force of the tilt cylinder 5.
- the pulling force, depressing force and pulling up force are received by the pair of link member stoppers 4a and 4b mounted on the beam 4.
- the lateral force generated when the vehicle is swivelled is received by the upper and lower side stoppers 13 and 14 mounted on the inner side of the beam 4.
- the vibrations generated in the hydraulic breaker 10 and the shank 8 at this time are alleviated by the elastic bushings 12 and 11 respectively mounted on the breaker mount bracket 9 and the links 7.
- the transverse deflection caused by the vibrations of the hydraulic breaker 10 are absorbed by the transverse deflection preventing elastic bushing 15 mounted on the breaker mount bracket 9.
- the direct driven shock ripper device in the direct driven shock ripper device according to the present invention, it is possible to improve the ripping limit of a hard rock and thus increase the ripping operability. It is also possible to provide a comfortable ride and prolong the life of the ripper point or caterpillars.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Percussive Tools And Related Accessories (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Body Structure For Vehicles (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The apparatus according to the present invention is a direct-acting impact ripper for transmitting a striking force of a hydraulic breaker to a rock efficiently. This impact ripper has a bracket (2) fixed to the rear portion of a chassis of a construction machine. At the rear side of the bracket (2), various parts are provided, which include a beam (4) to which a breaker mounting bracket (9) having a shank (8) and a hydraulic breaker (10) is fixed, an arm (6) connecting the lower portions of the bracket (2) and beam (4) together, a tilting cylinder (5) connecting the upper portions of the bracket (2) and beam (4) together, and a lift cylinder (16) connecting the upper portion of the bracket (2) and the lower portion of the beam (4) together. The beam (4) and shank (8) are provided with a pair of link members (7), which support the beam (4) and shank (8) pivotably so that these parts form a quadric link. Since the shank (8) is moved linearly owing to the quadric link to transmit a force to a rock efficiently, a ripping limit with respect to a hard rock is heightened, and a ripping workload increases.
Description
- The present invention relates to a parallel linkage type shock ripper device, and more particularly, to a direct driven shock ripper device which enables blows of a hydraulic breaker to be efficiently transferred to a base rock.
- Conventionally, when base rocks are to be dug (ripping operation) by a construction machine such as a bulldozer, a parallel link type shock ripper device 1 is mounted on a
rear 2 of the vehicle, as shown in Fig. 6. Ashank 8 is forced into the base rock by the depressing force generated by the weight of the bulldozer. The base rock is broken up by utilizing the towing force of the bulldozer and the hydraulic force of atilt cylinder 5. The ability with which the bulldozer breaks up the base rock is substantially proportional to the weight of the vehicle. Thus, the hardness of the base rocks at the operation site is investigated beforehand, and a vehicle which suits the operation condition is selected. - When hard rocks that cannot be broken up by such an operation exist, they are cracked by utilizing the blows of a
hydraulic breaker 10 mounted on the ripper device 1 to facilitate breaking (as is disclosed in Japanese Utility Model Laid-Open No. 35068/1987). The blows F given by thehydraulic breaker 10 are transferred from a blowingsurface 8b of theshank 8 to the base rock through aripper point 17 provided at one end of theshank 8, as shown in Fig. 7. However, since a shank rotatingshaft 8a provided at the other end of theshank 8 is pivotally supported on anarm 6, theripper point 17 revolves in the form of an arc around theshank rotating shaft 8a. In consequence, the blow F exerted on the base rock is reduced, and the function of thehydraulic breaker 10 cannot be fully utilized. As a result, the base rock cannot be broken regularly, and this makes the vehicle jolt much when it travels in reverse, providing uncomfortable ride. Furthermore, since theripper point 17 cannot be forced into the rock much, theripper point 17 slips often, increasing wear of the ripper point. Also, caterpillars slip often, increasing wear or damage thereof. In view of the aforementioned problem, an object of the present invention is to provide a direct driven shock ripper device which is capable of efficiently transferring blows of a hydraulic breaker to a base rock. - To this end, the present invention provides a direct driven type shock ripper device which includes a bracket fixed to a rear of a vehicle which is a construction machine, a beam on which a shank and a hydraulic breaker which givens impacts to the shank are mounted, the beam being disposed at the back of the bracket, an arm which interconnects a lower portion of the bracket to a lower portion of the beam, a tilt cylinder which interconnects an upper portion of the bracket to an upper portion of the beam, the bracket, the beam, the arm and the tilt cylinder in combination form a parallel linkage, and a lift cylinder provided between the upper portion of the bracket and the lower portion of the beam. The shank is mounted on the beam through a pair of link members to form a quadric linkage. In consequence, blows of the hydraulic breaker can be efficiently transferred to a base rock in the form of a linear motion of the shank. This facilitates breaking or cracking of the base rock and improves the ripping operability.
-
- Fig. 1 is a side elevational view of an embodiment of a direct operated shock ripper device according to the present invention;
- Fig. 2 is a cross-sectional view showing a state in which a ripper shank is mounted on a beam;
- Fig. 3 is a section taken along the line A - A of Fig. 1;
- Fig. 4 is a section taken along the line B - B of Fig. 1;
- Figs. 5 (a) and 5 (b) are respectively sections taken along the lines C - C and D - D of Fig. 1;
- Fig. 6 is a side view of a bulldozer with a conventional shock ripper device; and
- Fig. 7 illustrates the conventional shock ripper device.
- Fig. 1 is a side elevational view of an embodiment of a direct driven shock ripper device according to the present invention. This direct driven shock ripper device includes a
bracket 3 fixed to a rear 2 of a vehicle, and abeam 4 disposed at the rear of thebracket 3, anarm 6 which couples the lower portion of thebracket 3 and the lower portion of thebeam 4, atilt cylinder 5 which interconnects the upper portion of thebracket 3 to the upper portion of thebeam 4, and alift cylinder 6 extending between the upper portion of thebracket 3 and the lower portion of thebeam 4. Ashank 8 is mounted on thebeam 4, and ahydraulic breaker 10 is incorporated in thebeam 4. Theshank 8 is pivotally supported on thebeam 4 through a pair oflink members 7. Aripper point 17 is mounted on the forward end of theshank 8. Thehydraulic breaker 10 is held above a blowing surface provided on the rear end of theshank 8 by abreaker mount bracket 9 mounted on thebeam 4. - Fig. 2 is a cross-sectional view showing a state in which the
shank 8 is pivotally supported on thebeam 4 by means of the pair oflink members 7. Each of thelinks 7 is pivotally supported on thebeam 4 at one end thereof P or Q. The other ends S and T of thelinks 7 are supported on theshank 8. The 4 points, P, Q, S and T form a quadric linkage which moves theshank 8 in a straight line when thehydraulic breaker 10 strikes theshank 8.Link member stoppers 4a and 4b are mounted on thebeam 4 to limit the linear motion of theshank 8 which occurs when loads are applied to theshank 8. - Fig. 3 is a section taken along the line A - A of Fig. 1. The one end P of the
link 7 is pivotally supported on thebeam 4 through an elastic bushing 11, and the other end S is pivotally supported on theshank 8 - Fig. 4 is a section taken along the line B - B of Fig. 1. The one end Q of the
link 7 is pivotally supported on thebeam 4 through the elastic bushing 11, and the other end T is pivotally supported on theshank 8. Thebreaker mount bracket 9 is pivotally supported on thebeam 4 through anelastic bushing 12. - Figs. 5 (a) and (b) are respectively sections taken along the lines C - C and D - D of Fig. 1. An upper side stopper 13 and a
lower side stopper 14 are mounted on the inner side of thebeam 4 in such a manner that they grip theshank 8 to receive the lateral deflection generated in theshank 8 when the vehicle is swivelled. Anelastic bushing 15 is mounted on the inner side of thebreaker mount bracket 9 to prevent lateral deflection generated in thehydraulic breaker 10 when it strikes theshank 8. - When the bulldozer with the thus-arranged direct driven shock ripper device is operated for a normal ripping operation, the
lift cylinder 16 is stretched, as shown in Fig. 1. Thereafter, theshank 8 is forced into the ground by the depressing force caused by the weight of the vehicle, and the base rock is broken up by utilizing the pulling force of the vehicle and the pulling up force of thetilt cylinder 5. The pulling force, depressing force and pulling up force are received by the pair oflink member stoppers 4a and 4b mounted on thebeam 4. The lateral force generated when the vehicle is swivelled is received by the upper andlower side stoppers beam 4. When there exists a base rock that cannot be broken by the normal ripping operation, a blow is given to the blowingsurface 8a of theshank 8 by thehydraulic breaker 10. At that time, since theshank 8 is pivotally supported on thebeam 4 by means of the pair oflink members 7, as shown in Fig. 2, theshank 8 moves in a straight line (in directions indicated by the arrows), allowing the blowing force to be efficiently transferred to the base rock through theripper point 17 mounted on the forward end of theshank 8. Thus, the hard rock ripping limit (elastic wave speed) increases, and ripping operability therefore increases. The vibrations generated in thehydraulic breaker 10 and theshank 8 at this time are alleviated by theelastic bushings 12 and 11 respectively mounted on thebreaker mount bracket 9 and thelinks 7. The transverse deflection caused by the vibrations of thehydraulic breaker 10 are absorbed by the transverse deflection preventingelastic bushing 15 mounted on thebreaker mount bracket 9. - As will be understood from the foregoing description, in the direct driven shock ripper device according to the present invention, it is possible to improve the ripping limit of a hard rock and thus increase the ripping operability. It is also possible to provide a comfortable ride and prolong the life of the ripper point or caterpillars.
Claims (4)
1. A direct driven type shock ripper device including a bracket fixed to a rear of a vehicle which is a construction machine, a beam on which a shank and a breaker mount bracket supporting a hydraulic breaker are mounted, said beam being disposed at the rear of said bracket, an arm which couples a lower portion of said bracket to a lower portion of said beam, a tilt cylinder which couples an upper portion of said bracket to an upper portion of said beam, and a lift cylinder which couples the upper portion of said bracket to the lower portion of said beam,
an improvement being characterized in that a pair of link members are provided to pivotally support said shank and said beam and thereby form a quadric linkage.
an improvement being characterized in that a pair of link members are provided to pivotally support said shank and said beam and thereby form a quadric linkage.
2. A direct driven type shock ripper device according to claim 1, wherein said beam is provided with a pair of link member stoppers which limit the linear motion of said shank caused by said link members, and wherein an elastic bushing for absorbing vibrations of said shank is provided at portions of the beam at which said link members are pivotally supported.
3. A direct driven type shock ripper device according to claim 1, wherein said beam is provided with a pair of upper and lower side stoppers which grip said shank and thereby receive a lateral force generated in said shank when the vehicle is swivelled.
4. A direct driven type shock ripper device according to claim 1, wherein an elastic bushing for absorbing vibrations of said hydraulic breaker is provided at a portion of said beam at which said breaker mount bracket is mounted, and wherein said breaker mount bracket is provided with an elastic bushing which prevents lateral deflection of said hydraulic breaker when it gives a blow.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP128698/88U | 1988-09-30 | ||
JP1988128698U JPH072736Y2 (en) | 1988-09-30 | 1988-09-30 | Direct acting shock ripper device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0389643A1 true EP0389643A1 (en) | 1990-10-03 |
EP0389643A4 EP0389643A4 (en) | 1991-11-13 |
Family
ID=14991210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890910932 Withdrawn EP0389643A4 (en) | 1988-09-30 | 1989-09-28 | Direct-acting impact ripper |
Country Status (4)
Country | Link |
---|---|
US (1) | US5094017A (en) |
EP (1) | EP0389643A4 (en) |
JP (1) | JPH072736Y2 (en) |
WO (1) | WO1990003473A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103161187A (en) * | 2013-04-12 | 2013-06-19 | 山推工程机械股份有限公司 | Bulldozer and earth-loosening device thereof |
WO2014053686A1 (en) * | 2012-10-03 | 2014-04-10 | Javier Aracama Martinez De Lahidalga | Hydraulic hammer device for excavators |
CN111877443A (en) * | 2020-03-11 | 2020-11-03 | 成都市猎石者破岩科技有限责任公司 | Rock breaking device |
WO2021180010A1 (en) * | 2020-03-11 | 2021-09-16 | 成都市猎石者破岩科技有限责任公司 | Rock breaking device |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1074728A (en) * | 1991-06-19 | 1993-07-28 | 俄罗斯科学院西伯利亚矿业分院 | The bucket tooth in the dynamic source of power shovel |
US6517164B1 (en) * | 2000-08-07 | 2003-02-11 | Richard E. White | Hammer-ripper excavating system |
CA2515076C (en) * | 2003-10-14 | 2009-02-03 | Astec Industries, Inc. | Scaling assembly |
JP4690012B2 (en) * | 2003-11-21 | 2011-06-01 | 株式会社小松製作所 | Ripper equipment |
EP1888302A4 (en) | 2005-05-16 | 2015-05-06 | Terminator Ip S A | Improved breaking machine |
KR100819471B1 (en) | 2007-10-08 | 2008-04-08 | 주식회사 필엔지니어링 | Vibration absorber for breaker |
US20090199441A1 (en) * | 2008-02-11 | 2009-08-13 | Caterpillar Inc. | High visibility ripper assembly and machine using same |
US8579040B2 (en) * | 2009-10-14 | 2013-11-12 | Daniel D. Sedmak | Power-assisted garden tools |
US8490711B2 (en) * | 2011-12-21 | 2013-07-23 | Caterpillar Inc. | Ripper assembly having a linkage assembly and an actuator |
US11818973B1 (en) | 2020-05-12 | 2023-11-21 | Daniel D. Sedmak | Garden tiller utilizing an impact motor |
Citations (3)
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FR1546107A (en) * | 1967-03-31 | 1968-11-15 | Acoustic straightener for hearing device used to cut hard materials | |
DE2041218A1 (en) * | 1969-08-22 | 1971-02-25 | Guibbert Jean Rene | Device for tearing up the ground using impact force |
US3897975A (en) * | 1971-04-12 | 1975-08-05 | Caterpillar Tractor Co | Method for fracture of material in situ with stored inertial energy |
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JPS5247284A (en) * | 1975-10-11 | 1977-04-14 | Hitachi Metals Ltd | Magnet rotor in use of magnetic powder |
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DE2851942C2 (en) * | 1978-12-01 | 1983-08-18 | Friedrich Wilh. Schwing Gmbh, 4690 Herne | Excavator |
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US4240216A (en) * | 1979-03-26 | 1980-12-23 | Lehman-H Feeder & Plow, Inc. | Land forming and/or farming apparatus |
US4453772A (en) * | 1982-09-27 | 1984-06-12 | Caterpillar Tractor Co. | Modular impact ripper assembly |
JPS61112066A (en) * | 1984-11-05 | 1986-05-30 | Dainippon Ink & Chem Inc | Production of epoxy resin |
JPS61112066U (en) * | 1984-12-24 | 1986-07-15 | ||
JPH0631603B2 (en) * | 1985-08-07 | 1994-04-27 | 本田技研工業株式会社 | Ignition timing control device for internal combustion engine |
US4625438A (en) * | 1985-09-20 | 1986-12-02 | Mozer Daniel S | Excavating bucket having power driven, individually controlled digging teeth |
JPS6447859U (en) * | 1987-09-18 | 1989-03-24 | ||
US4834461A (en) * | 1987-11-18 | 1989-05-30 | Caterpillar Inc. | Control system for a multiple shank impact ripper |
-
1988
- 1988-09-30 JP JP1988128698U patent/JPH072736Y2/en not_active Expired - Lifetime
-
1989
- 1989-09-28 WO PCT/JP1989/000987 patent/WO1990003473A1/en not_active Application Discontinuation
- 1989-09-28 US US07/476,506 patent/US5094017A/en not_active Expired - Fee Related
- 1989-09-28 EP EP19890910932 patent/EP0389643A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1546107A (en) * | 1967-03-31 | 1968-11-15 | Acoustic straightener for hearing device used to cut hard materials | |
DE2041218A1 (en) * | 1969-08-22 | 1971-02-25 | Guibbert Jean Rene | Device for tearing up the ground using impact force |
US3897975A (en) * | 1971-04-12 | 1975-08-05 | Caterpillar Tractor Co | Method for fracture of material in situ with stored inertial energy |
Non-Patent Citations (1)
Title |
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See also references of WO9003473A1 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014053686A1 (en) * | 2012-10-03 | 2014-04-10 | Javier Aracama Martinez De Lahidalga | Hydraulic hammer device for excavators |
CN103161187A (en) * | 2013-04-12 | 2013-06-19 | 山推工程机械股份有限公司 | Bulldozer and earth-loosening device thereof |
CN103161187B (en) * | 2013-04-12 | 2015-11-25 | 山推工程机械股份有限公司 | A kind of bulldozer and loosening device thereof |
CN111877443A (en) * | 2020-03-11 | 2020-11-03 | 成都市猎石者破岩科技有限责任公司 | Rock breaking device |
WO2021180010A1 (en) * | 2020-03-11 | 2021-09-16 | 成都市猎石者破岩科技有限责任公司 | Rock breaking device |
CN111877443B (en) * | 2020-03-11 | 2024-03-26 | 四川猎石者龙宇科技有限公司 | Rock breaking device |
Also Published As
Publication number | Publication date |
---|---|
US5094017A (en) | 1992-03-10 |
WO1990003473A1 (en) | 1990-04-05 |
JPH0278647U (en) | 1990-06-18 |
JPH072736Y2 (en) | 1995-01-25 |
EP0389643A4 (en) | 1991-11-13 |
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